Shelf bracket



FIG. 1 is a perspective view of a shelf bracket showing our design;

FIG. 2 is a left side elevation view;

FIG. 3 is a right side elevation view;

FIG. 4 is a front end elevation view;

FIG. 5 is a back end elevation view;

FIG. 6 is a top plan elevation view; and,

FIG. 7 is a bottom plan view.

The ornamental design for a shelf bracket, substantially as shown.